Table 2 Comparison of functional scores pre- and postoperatively for both groups

 Preoperatively^a

52.0 ± 5.3

50.7 ± 5.1

0.464

 3 months^a

68.8 ± 7.1

75.7 ± 7.3

0.007^c

 6 months^a

77.6 ± 5.1

82.8 ± 7.8

0.037^c

 1 year^a

88.0 ± 6.9

89.4 ± 8.6

0.607

 Latest follow-up^b

98.2 ± 2.3

93.4 ± 6.1

0.030^c

 Preoperatively^a

37.1 ± 5.7

35.7 ± 7.1

0.530

 3 months^a

56.9 ± 13.9

65.2 ± 11.0

0.044^c

 6 months^b

77.5 ± 11.9

84.6 ± 7.9

0.118

 1 year^a

90.6 ± 8.0

92.4 ± 6.0

0.427

 Latest follow-up^b

98.2 ± 2.6

94.3 ± 5.0

0.010^c